- Myself and some friends noticed something weird on Windows 8 months ago. I was using a Build slate and they were using the Samsung Series 7 slate (Build slate is based on it). The screen would appear to randomly darken and brighten. I didn’t pay too much attention to it; I thought it might be a driver thing that might get sorted after RTM.
Then it started happening on my new Windows 8 tablet. I noticed it never happened during the the bright of day or in the well lit office at work. However, it happened all the time at home at night. It just started happening here where I have the curtains pulled and the TV on. Then I figured it out … if the ambient light is dim, the light sensor in the devices are getting confused, and the auto-brightness feature of Windows 8 misbehaves. The screen going dark/bright every few seconds can get really annoying.
You can disable this feature. Change the Adjust My Screen Brightness Automatically to off. You can find this setting here in Windows 8:
- Open the new control panel: Settings – Change PC Settings
- Browse to General
- Under Screen
In Windows 8.1 browse to PC Settings (the new Control Panel):
- PC & Devices
- Power & Sleep
Now you have an always bright screen (or a dimmed screen), depending on the configuration of your active power plan.